David Donovan Books

Once a Warrior King: Memories of an Officer in Vietnam

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"Portrays the Vietnam experience of an officer and a gentlemen. It is the story of a man with a sense of honor and responsibility that extended beyond his immediate command and encompassed the peop...

Once a warrior king

By David Donovan

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Once a Warrior King

By David Donovan

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ONCE A WARRIOR KING

By David Donovan

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The memoir of a young American soldier who became the most powerful man in a remote rural district of Vietnam In the spring of 1969, First Lieutenant David Donovan arrived in the Mekong Delta of So...

Once a warrior king

By David Donovan

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Once A Warrior King

By David Donovan

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Spiritual selfhood and the modern idea

By David Donovan

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Murphy Station

By David Donovan

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Once a Warrior King

By David Donovan

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Counterinsurgency

By David Donovan

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.